2 sm Onions finely chopped
2 1/2 tb Oil
1 lb Ground beef/lamb
Salt and pepper
2    Tomatoes skinned and chopped
1/4 lb Swiss/hard cheddar grated

Saute the onions in oil until soft and a pale golden color. Add the meat
and fry, squashing well with a fork, until it changes color. Season to
taste with salt and pepper, add the tomatoes and moisten with a few
tablespoon of water. Cook until the tomatoes are reduced to a puree. Stir
in grated cheese and remove from the heat.